The fact that this exists annoys me to no end, but some of the examples actually make sense. For instance, censoring the word Vagina in iBooks: it's a body part and there's no reason to be ashamed of it, but couldn't Apple just be trying to keep the initial results G rated? The same with autocomplete in search engines. Like the source said, it's not like the content is being blocked.
Facebook has always been tyrannical with content, though, and there's no excuse for that.